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71.
Shelley Brown DuTeaux John W Newman Christophe Morisseau Elise A Fairbairn Karen Jelks Bruce D Hammock Marion G Miller 《Toxicological sciences》2004,78(2):187-195
Epoxide hydrolases play an important role in detoxifying epoxides that arise from the metabolism of xenobiotic and endogenous compounds. Both the soluble and microsomal forms of epoxide hydrolase (sEH and mEH, respectively) have been detected in the rat testis. Because of the important role the epididymis plays in sperm maturation and protection, the present study evaluated the presence and activity of these two epoxide hydrolases in the rat epididymis. Using Western blotting, protein bands consistent in size with both mEH and sEH were detected in the caput, corpus, and cauda of the epididymis. The mEH immunoreactive bands in the epididymis ( approximately 50 kDa) were consistent with mEH detected in the liver and kidney. The sEH immunoreactive bands in the epididymis ( approximately 65 kDa) were consistent with a recombinant sEH standard and sEH detected in the liver, kidney, and testis. The presence of mEH and sEH in the epididymis was supported by observations from substrate-based enzyme assays. Results indicated that epididymal mEH can hydrolyze [(3)H]-cis-stilbene oxide to the corresponding diol at levels approximately 9% of the kidney. Epididymal sEH hydrolyzed the substrate [(3)H]-trans-diphenylpropene oxide to the corresponding diol and this activity was inhibited by cyclohexyl-dodecyl urea. Arachidonic acid epoxygenase activity was detected in epididymal S9 fractions, suggesting that fatty acid metabolism by epididymal cytochrome P450s can form epoxides that subsequently become substrates for epididymal sEH. Results from the present study indicate that the epididymis contains at least two active forms of epoxide hydrolase. The role of these enzymes in the detoxification of xenobiotic epoxides is well known, although it is unclear what cellular role they may play in the formation of biologically active metabolites in the epididymis. 相似文献
72.
73.
Christophe Noll Janany Kandiah Gautier Moroy Yuchen Gu Julien Dairou Nathalie Janel 《Nutrients》2022,14(10)
Plant-derived polyphenols flavonoids are increasingly being recognized for their medicinal potential. These bioactive compounds derived from plants are gaining more interest in ameliorating adverse health risks because of their low toxicity and few side effects. Among them, therapeutic approaches demonstrated the efficacy of catechins, a major group of flavonoids, in reverting several aspects of Down syndrome, the most common genomic disorder that causes intellectual disability. Down syndrome is characterized by increased incidence of developing Alzheimer’s disease, obesity, and subsequent metabolic disorders. In this focused review, we examine the main effects of catechins on comorbidities linked with Down syndrome. We also provide evidence of catechin effects on DYRK1A, a dosage-sensitive gene encoding a protein kinase involved in brain defects and metabolic disease associated with Down syndrome. 相似文献
74.
Christophe Sifer Deborah Handelsman Emilie Grange Raphael Porcher Christophe Poncelet Brigitte Martin-Pont Brigitte Benzacken Jean-Philippe Wolf 《Journal of assisted reproduction and genetics》2009,26(11-12):575-581
Purpose
To compare the effects of 2 different media on embryo morphology and development at days 2/3.Method
Six hundred seventy-six attempts from 512 couples were included in this prospective auto-controlled study. Sibling oocytes of all couples undergoing an IVF (n?=?286) or ICSI (n?=?390) attempt were randomly assigned to either GIII series (Vitrolife) or ISM (Medicult) media. Primary end points were fertilization and embryo morphology rates.Results
Fertilization rates in GIII series and ISM (IVF: 59.9 vs 62.0% and ICSI: 65.7 vs 66.8%) respectively were not different. GIII series showed an increase, compared to ISM, of early cleavage rate, (IVF: 25.8 vs 16.2% (p?=?0.005); ICSI: 40.8 vs 25.5% (p?<?0.0001), and good embryo morphology rate at day 2 [IVF: 64.6 vs 57.3% (p?=?0.01); ICSI: 74.2 vs 69.4 (p?=?0.03)] and at day 3 [IVF: 57.5 vs 49.0% (p?=?0.02); ICSI: 67.2 vs 61.6% (p?=?0.01)].Conclusions
Embryo morphology at days 2/3 was significantly enhanced when the embryos were cultured in GIII series. 相似文献75.
Amitava Mitra Sandra Suarez-Sharp Xavier J.H. Pepin Talia Flanagan Yang Zhao Evangelos Kotzagiorgis Neil Parrott Satish Sharan Christophe Tistaert Tycho Heimbach Banu Zolnik Erik Sjögren Fang Wu Om Anand Shefali Kakar Min Li Shereeni Veerasingham Shinichi Kijima Andrew Babiskin 《Journal of pharmaceutical sciences》2021,110(2):594-609
76.
Antipsychotics increase vesicular glutamate transporter 2 (VGLUT2) expression in thalamolimbic pathways 总被引:1,自引:0,他引:1
Moutsimilli L Farley S El Khoury MA Chamot C Sibarita JB Racine V El Mestikawy S Mathieu F Dumas S Giros B Tzavara ET 《Neuropharmacology》2008,54(3):497-508
Recently the two vesicular-glutamate-transporters VGLUT1 and VGLUT2 have been cloned and characterized. VGLUT1 and VGLUT2 together label all glutamatergic neurons, but because of their distinct expression patterns in the brain they facilitate our ability to define between a VGLUT1-positive cortical and a VGLUT2-positive subcortical glutamatergic systems. We have previously demonstrated an increased cortical VGLUT1 expression as marker of antidepressant activity. Here, we assessed the effects of different psychotropic drugs on brain VGLUT2 mRNA and protein expression. The typical antipsychotic haloperidol, and the atypicals clozapine and risperidone increased VGLUT2 mRNA selectively in the central medial/medial parafascicular, paraventricular and intermediodorsal thalamic nuclei; VGLUT2 protein was accordingly amplified in paraventricular and ventral striatum and in prefrontal cortex. The antidepressants fluoxetine and desipramine and the sedative anxiolytic diazepam had no effect. These results highlight the implication of thalamo-limbic glutamatergic pathways in the action of antipsychotics. Increased VGLUT2 expression in these neurons might constitute a marker for antipsychotic activity and subcortical glutamate neurotransmission might be a possible novel target for future generation antipsychotics. 相似文献
77.
Polena V Mergui JL Perrot N Poncelet C Barranger E Uzan S 《European journal of obstetrics, gynecology, and reproductive biology》2007,130(2):232-237
OBJECTIVE: To assess the efficacy of transcervical resection of submucous fibroids according to type and size. MATERIALS AND METHODS: Retrospective follow-up of 235 women with submucous fibroids at outpatient hysteroscopy who underwent a hysteroscopic transcervical resection. The main indications were the abnormal uterine bleeding and fertility problems. Thirty-seven percent of patients had an associated endometrial ablation and 32% had a polyp resection. Fifty-one percent of women were menopausal. In cases of incomplete resection a repeat procedure was offered. RESULTS: Intra-operative complications were rare (2.6%) and there was no major complication. Eighty-four percent of cases were followed-up. The median follow-up was 40 months (range 18-66 months). The procedure was classed as a success in 94.4% of patients. Among the cases that were classed as a failure, four patients had a repeated hysteroscopic procedure, three patients had a subsequent hysterectomy and four patients presented with abnormal uterine bleeding at follow-up. CONCLUSION: The hysteroscopic transcervical resection of submucous fibroids is a safe and highly effective long-term therapy for carefully selected women presenting with abnormal uterine bleeding and fertility problems. It produces satisfactory long-term results with few complications. 相似文献
78.
Favre R Duchange N Vayssière C Kohler M Bouffard N Hunsinger MC Kohler A Mager C Neumann M Vayssière C Viville B Hervé C Moutel G 《Prenatal diagnosis》2007,27(3):197-205
OBJECTIVES: To evaluate the level of information and informed consent for maternal serum screening (MSS) for Down syndrome (DS) in the second trimester of pregnancy and analyse the exercise of autonomy towards the test by the women concerned. METHODS: We studied the population of pregnant women attending obstetric consultations in two French hospitals over a 3-month period. The women were assigned to three groups according to MSS results for DS: women at high risk of having a child with DS (group 1), women at low risk (group 2) and women who did not undergo the test (group 3). A questionnaire was completed before the medical consultation, to assess the quality of consent before amniocentesis for the group at high risk and before the second-trimester ultrasound scan for the other two groups. RESULTS: We analysed 305 questionnaires for 89, 137 and 79 women belonging to groups 1, 2 and 3 respectively. In total, 123 women (40.3% [IC 95%, 35-46%]) were considered to be well informed; 33 (10%, [IC 95%, 8-12%]) had a high level of knowledge, but made choices not consistent with their stated attitude, and 149 (49.7% [IC 95%, 45-56%]) were considered uninformed. Logistic regression analysis showed that maternal consent depended on three independent components: The score attributed to the doctor for information about MSS (t = 4.216, p < 0.001).Whether the patient belonged to group 1 (t = -2.631, p < 0.009).Educational level (< high-school diploma, high-school diploma or at least two years of higher education after high school) (t = 2.324, p < 0.02). The rate of consent increased with educational level and was highest for the women in group 1 and for those whose doctor had a high information score. CONCLUSIONS: Our findings clearly show that women are provided with insufficient information concerning MSS screening for DS in the second trimester of pregnancy for real and valid consent to be obtained. 相似文献
79.
Christophe Moderie Nicolas Nuez Allan Fielding Stefano Comai Gabriella Gobbi 《The international journal of neuropsychopharmacology / official scientific journal of the Collegium Internationale Neuropsychopharmacologicum (CINP)》2022,25(6):479
BackgroundWomen are nearly twice as likely as men to suffer from major depressive disorder. Yet, there is a dearth of studies comparing the clinical outcomes of women and men with treatment-resistant depression (TRD) treated with similar augmentation strategies. We aimed to evaluate the effects of the augmentation strategies in women and men at the McGill University Health Center.MethodsWe reviewed health records of 76 patients (42 women, 34 men) with TRD, treated with augmentation strategies including antidepressants (AD) with mood stabilizers (AD+MS), antipsychotics (AD+AP), or in combination (AD+AP+MS). Clinical outcomes were determined by comparing changes on the 17-item Hamilton Depression Rating Scale (HAMD-17), Montgomery-Åsberg Depression Rating Scale (MADRS), Quick Inventory of Depressive Symptomatology (QIDS-C16), and Clinical Global Impression rating scale (CGI-S) at the beginning and after 3 months of an unchanged treatment. Changes in individual items of the HAMD-17 were also compared between the groups.ResultsWomen and men improved from beginning to 3 months on all scales (P < .001, η p2 ≥ 0.68). There was also a significant sex × time interaction for all scales (P < .05, η p2 ≥ 0.06), reflecting a greater improvement in women compared with men. Specifically, women exhibited greater improvement in early (P = .03, η p2 = 0.08) and middle-of-the-night insomnia (P = .01, η p2 = 0.09) as well as psychomotor retardation (P < .001 η p2 = 0.16) and psychic (P = .02, η p2 = 0.07) and somatic anxiety (P = .01, η p2 = 0.10).ConclusionsThe combination of AD+AP/MS generates a significantly greater clinical response in women compared with men with TRD, supporting the existence of distinct pharmacological profiles between sexes in our sample. Moreover, they emphasize the benefit of augmentation strategies in women, underscoring the benefit of addressing symptoms such as insomnia and anxiety with AP and MS. 相似文献